About: http://webisa.webdatacommons.org/218286046

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	This case is actually quite difficult to pick up unless you are using some sort of framework that can combine dead-code elimination with other optimizations like copy propagation or constant propagation.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com